Apple is no more open or closed than before (still totally closed).
EDIT: Since I can't respond to the commenter, I'll edit a response here. The comment is silly... the iPad just came out, the iPhone has been out for years. Maybe Apple got more closed with the release of the iPhone, but the iPad is more of the same.
And actually, iPods are locked down too, so iPhones were just more of the same. Oh wait, Macs were locked down too until Apple switched to Intel processors... so even iPods were nothing new.